Window ventilator



Feb. 16, 1943. c. s. AMSLER WINDOW VENTILATOR Filed July 12, 1941 2 Sheets-Sheet 1 INVENTOR EHHRLES S. HITISILER Feb. 16, 1943. c, s AMSLER 2,311,324

' WINDOWYVENTILATOR Filed July 12, 1941 2 sneets-sheet 2 Y I INVENTOR.

7i5- I B Haas S.FIIT|SLER Patented Feb. 16, 1943 um'rso STATES PATENT OFFICE WINDOW VENTILATOR Charles S. Amsler, San Francisco, Calif. Application July 12,1941, Serial No. 402,093

3 Claims.

This invention relates to improvements in window ventilators and has particular reference to a ventilator for use in combination with an ordinary window frame and window sash occupying a space beneath the raised lower sash.

The principal object of this invention is to provide a ventilator which may be readily adjusted to fit windows of various widths.

A further object of the invention is to produce a device of this character which will permit air to enter a room through hinged louvers which may be adjusted to various angles so as to direct the incoming air upwardly to varying degrees.

A further object of the invention is to provide means for sealing the device between the window sill and the bottom of the sash frame.

A still further object is to produce a device which will be highly serviceable in use, and a device which will be economical to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. I is a front elevational view of my device as the same would appear installed in a window, and looking from the interior of a room, parts being broken away;

Fig. II is a cross sectional view taken on the line 11-11 of Fig. I and on an enlarged scale;

Fig. III is a cross sectional view taken on the line III-III of Fig. I and on an enlarged scale;

Fig. IV is a fragmentary perspective view, partly in cross section, showing the manner in which the extension wings and cap rail are assembled; and

Fig. V is an outside elevation of my device installed in a window frame.

In order to secure ventilation in a room, it has been common to raise the lower sash and to insert a screentherein or to specially construct a. ventilator of correct length for the width of the window to be inserted therein, which ventilator may have in its construction a damper like arrangement to control the amount of ventilation therethrough.

I have devised a ventilator which consists of a screen arrangement positioned between the raised bottom portion of the lower window sash and the window sill, and through the use of extension wings I have created a structure which may be adjusted to any width or window. To this structure I have attached hinged louvers which operate in unison, whereby the amount of air passing through the screen may be controlled and directed upwardly so as to prevent a disagreeable side draft. v

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a window frame having a window sill 6 and sliding sashes l and 8, the sash I being the upper sash and the sash 8 being the lower.

My device, adapted to be placed in the opening beneath the raised lower sash, comprises a rectangular frame 9, to which is secured a screen I I. This frame has a downwardly extending angular portion [2 which lies parallel with the drain of the window sill. Extending rearwardly from the frame 9 is a baffle I3, which baflle has attached thereto side wings I4, thus forming an open faced and open top housing for the hinged louvers l6 and I1, hinged as at l8 and. I9, respectively. These louvers l6 and I! are bent throughout their length, as best shown in Fig. II, and have end pieces 2| and 22, respectively,

which are connected together by a link 23, one

of these links being provided. at each end of the louver. Springs 24 rest against the links 23 and act as friction brakes, whereby the louvers may be adjustably held in any desired open or closed position.

In order to fit the structure thus far described to the window opening, I provide extension wings 26, one at each end, which are slidably secured to the frame 9 by channel 30, as best illustrated in Fig. IV where it will be noted that the frame 9 has a channel 39 formed at its ends. These extension wings each have a side piece 21 which fits in the runway of the sash (see Fig. III), these wings being made of sheet metal and, therefore, capable of being readily cut to any desired width determined by the distance between the sides of the frame 9 and the sides of the sash runway. A cap rail 28 is placed over the top of the frame 9 and the wings 26, as best shown in Figs. II and IV. This cap rail has a downwardly extending portion 29 against which the bottom of the lower window sash rests (see Fig. II). It is, of course, understood that the cap rail 28 and the angular portion l2 are of sufiicient length to extend a distance greater than the entire width of the window and are then cut off as conditions may require.

In order to open and close the louvers, I provide knobs 3| whereby the same may be manipulated.

It will thus be seen that I have provided a window screen and ventilator arrangement which may be readily inserted beneath the raised lower sash of the window, and by simply adjusting the extension wings and the cap rail, I am enabled to insert my device ready for use, and the sa'mewill permit the ingress of air from without to within a room through the adjustable louvers.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material,

size, shape and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a device of the character described, a rectangular screened frame adapted to be inserted in a window opening, extension wings vertically slidably secured to said frame and adapted to fill the space between said frame and the side margin of said window opening, and a cap rail supported on said frame and said extension wings, whereby said frame and said wings will be held in alignment with each other, said cap rail having a downwardly extending portion lying outside of the vertical plane of said frame, and adapted to be engaged by the lower portion of a window sash.

2. In a device of the character described, a rectangular screened frame adapted to be inserted in a window opening, said frame having channels formed upon its parallel vertical end margins, extension wings vertically slidable in said channels and filling the space between said frame and the side margins of said window opening, and a cap-rail overlying said frame and said extensions and serving to hold said frame and said extensions in alignment.

3. In a device of the character described, a rectangular screened frame adapted to be inserted in a window opening, said frame having channels formed upon its parallel vertical end margins, extension wings vertically slidable in said channels and filling the space between said frame and the side margins of said window opening, and a cap rail overlying said frame and said extensions and serving to hold said frame and said extensions in alignment, said extensions each having an angular side piece verti- CHARLES S. AMSLER. 

